Improvement in dies for making car-coupling pins



' Q Dies-f c. H. WILLIAMS.

or Making Gar-Coupling Pins.

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B. H. WILLIAMS.

Dies for *Makingllar-Goupling Pins. No, 140,980, Patentedluly15,l873.

!.l giitm'esses I 0% Z/ V Y'Z Z'I aw fimk Mi??? AM PHOTOiITIIDGRAH/IG caMY.(OSEORME3 moms) UNITED STATES PATENT OFFICE- CHARLES H. WILLIAMS, OFCLEVELAND, OH IO.

IMPROVEMENT IN DIES FOR MAKING CAR-COUPLING PINS.

Specification forming part of Letters Patent No. 140,980, dated July 15,1873; application filed May 21, 1873.

To an whom it may concern: V

Be it known that 1, CHARLES H. WILLIAMS, of Cleveland, in the county of(luyahoga and State of Ohio, have invented certain new and usefulImprovements in Dies for Making Coupling-Pins, of which the following isa full, clear, and exact description, reference being had to theaccompanying drawing and the letters of reference marked thereon makingpart of this specification, in which- Figure l is a side view of theclamping-dies, heading-die, and pin. Fig. 2 is a perspective view of thepin. Fig. 3 is a perspective view of the clamping and heading dies. Fig.4 is a vertical sectional view of the pointing-dies. Fig. 5 is alongitudinal sectional view of Fig. 4. Fig. 6 is a perspective view ofone of the pointing-dies. Fig. 7 is a top-plan view of thepointing-dies.

The object of my invention is to furnish, as a new article ofmanufacture, a flat or rectangular coupling-pin for railroad cars havingrounded edges, and which is provided with a continuous collar, pressedfrom the bar of metal of which the pin is composed, thus forming the pinand collar out of the same bar, and which produces a pin heretoforeunknown to the trade. Formerly this class of pins have either simply hadshoulders at their edges,

or, when formed with a collar, it has invariably been welded on, andwhich process of welding is both expensive and troublesome. The greatadvantage of a collar over a shoulder is that, no matter what the formof the opening through the draw-head may be, or whether any portion ofthe same is broken away or not, the collar always causes the pin to dropand rest with a true vertical bearing.

The nature of my invention consists in securing in a suitable machinepressing and swaging dies, the form, configuration, and arrangement ofwhich are such that through their action on an ordinary flat orrectangular bar of merchantable iron a continuous collar is pressed outon the shank of the pin, and which terminates in either a square orrounded edge, and then through the action of the swagingdies to so pressthe lower section of the flat pin as to leave it with a tapering point,and thus, as has been said, furnish, as a new arti- Ole of manufacture,a flat coupling-pin for railroad cars with rounded edges, and providedwith atapering point, and having a continuous collar surrounding theentire shank of the pin, and all formed out of the same piece or bar ofmetal.

The construction and operation of my invention are as follows: novel inthe arrangement and construction of the machine with which I propose tooperate the dies, it being, in all respects, the same as thatillustrated in my patent of December 13, 1870, No. 110,179, in theaccompanying drawings I have only shown the improved dies, and to whichmy claims are restricted. On Sheet 1 are shown the" dies that form thecollar. VA A are the clamping-dies, and B the pressure or heading die.One of these dies, A, is stationarily secured in the machine, and theother, A, is movable, and is to be so secured as to allow of itstraveling toward and receding from the stationary die in such manner asto always insure of its working in the same plane therewith and on atrue horizontal line. These dies A A are counter parts of each other,and their recessed faces a a are of the form shown in Fig. 3, and whenso brought together that their recesses a a, meet or register, anopening or slot is left, the configuration of which is exactly that ofthe pin 0, Fig. 2. The function of these dies A A is simply to receiveand secure the bar for the action of the heading die, and not designedin any manner to change the form or outline of the bar. B is theheading-die, and is also secured so as to travel with a horizontalmovement, but on a line at right angles to that on which the movable-dieA travels. The recessed face of this die throughout its main section issuch as to permit of the die passing over the head of the bar or pin D,and is in outline precisely similar to the opening or slot formed by thedies A A when their faces meet. This socketopening in the die Bterminates in an enlarged or flaring cavity, b, so formed as to impartto the collar cl the configuration shown in Fig.2. These dies A, A, andB are secured and relatively so operate that the die A is constantlybeing moved to and fro to clamp the cut bar and release the same afterthe collar has been formed thereon. The headingdie B is also relativelyso connected with the dies A A,

As there is nothing and these latter so clamp the bar, as to leave sucha section thereof projecting beyond their. surfaces a a. that on theforward movement of the die B, when the head of the socket I) strikesthe end of the bar, sufficient metal shall be left to develop the collar(1, the cavity 2) forming the upper rounded section thereof, and thefaces a a of the dies AA forming its lower or fiat surface.

The collar having been thus formed, I will now proceed to describe theoperation of pointing the pin. On Sheet 2 are shown the dies whichaccomplish the first stage of the process, and in which E is astationary box-die, and F a movable or traveling die. The form andconfiguration of their pressure-faces e f are inclined or wedge-shaped,and swage the lateral faces of the bar into a form that correspondsthereto, and which leaves the flat face of the shank of the pin stillparallel throughout. On Sheet 3 are shown the dies that perform thesecond stage of the pointing process and finish the pin, and in which Gis a stationary die, and H is a traveling die. These dies arecounterparts of each other, and their pressure-cavities are of the formshown. The

gives to the pin the desired point. These dies are all secured in anysuitable machine, and are so arranged as to operate as described.

As I have before said, there being no feature of novelty about themachine I propose using, and my invention being confined entirely to thedies, I have only shown these and described their relative arrangementand operation.

What I claim as new, and desire to secure by Letters Patent of theUnited States, is-

1. The combination of the dies E F G H, constructed as shown, andrelatively arranged to operate in such manner as to impart or give atapering point to a coupling-pin made from a fiat bar of iron havingrounded edges, substantially as described.

2. The combination of the clamping or griping dies A A and theheading-die B for developing the collar and the dies E F and GH forpointing the pin, the whole being constructed and arranged to operatesubstantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

G. H. \VILLIAMS.

Witnesses EDWIN JAMES, J os. T. K. PLANT.

